Brake pad railway rolling stock

 

(57) Abstract:

Usage: refers to the brake pads railway rolling stock. The inventive pad has a metal frame in the shape of a frame whose length is less than the length of the rear of the pads at the ends of the frame placed in the zone bosses. 2 Il.

The invention relates to the brake pads railway rolling stock.

The analogue of the claimed invention is a rail brake pad comprising a polymeric friction material and metal frame, made in the form shrunk in the friction material on the perimeter of Telnice pads frame formed of two closed frames, the inner part which are mutually overlapped and bent out the rear of the pads, the area of the frame corresponds to the square Telnice pads (see and.with. USSR N 518403, class B 61 H 7/02, 1976).

The disadvantage of analog is the degradation of the performance due to the possibility of full or partial destruction of Telnice pads under impact loads, especially directed at an angle to Telnice (side), due to the complete or partial separation (dug) frames, which are located is close to the proposal is a railway brake pad, consisting of polymeric friction material and metal frame, made in the form shrunk in the friction material of the frame, the length of which is less than the length of Telnice (rear) brake pads (see RF patent N 2045431, class B 61 H 7/02, 1995).

A disadvantage of the known solutions is the degradation of the performance due to insufficient reinforcement rear of the pads in the zone bosses, where the impact pad of the brake Shoe to compress it to the rolling surface of the wheels during braking, which can lead to premature failure of rear pads.

The task which sent the invention is to improve the operational characteristics of the pads by reducing the possibility of full or partial destruction of the rear pads when braking.

To achieve the technical result in the train brake pad, consisting of a polymeric friction material and metal frame, made in the form shrunk in the friction material of the frame, the length of which is less than the length of the rear of the pads, the ends of the frame placed in the zone bosses.

In Fig. 1 shows the 1, Telnic (back) 2, lugs 3 for attachment to the brake Shoe and the frame 4. As a polymeric friction material 1 can be used friction polymer composite containing a polymer binder and dispersed, including fibrous fillers. The rear portion 2 of the pad includes a metal frame, which can be performed, for example, in the form of two closed frames, for example, from a wire, the inner part which are mutually overlapped and bent out the rear of the pads, forming an eyelet for passing the checks. Frame plated in friction polymeric material, such as molded pads in the mold. The back of the pads may also optionally contain sheet material, such as perforated sheet metal, metal mesh, etc. are placed outside the frame, which is also shrinked in polymer friction material, such as molded pads. The length l of the frame 4 is less than the length L of the rear part of the pad, resulting frame is positioned in such a way that the extreme elements 5 frames (limiting the length of the frame) posted in areas of the bosses 3 (at the rear of the pads under the base). This extreme elements of the frame can be as poev bosses.

Be made of the inventive pad may in the following way. In the mold is placed a sheet material (if necessary), fabricated (welded) wire frame of the desired size and shape and friction polymer composition. Next, carry out the molding and manufacturing pads known methods.

The location of the extreme elements of the framework in the areas of bosses provides additional reinforcement rear of the pads in the areas affected by the brake Shoe, which reduces the possibility of destruction of the rear pads shock loads during braking. The result is improved operational performance pads.

Brake pad railway rolling stock containing polymeric friction material that forms in the form of a pad, and a metal frame made in the form shrunk in the friction material of the frame, the length of which is less than the length of the rear side of the pad, wherein the pad is provided with a base for attachment to a brake Shoe located on the rear of the pads at the ends of the frame placed in the body of the pad under the base.

 

Same patents:

Pad disc brake // 2086444
The invention relates to the brake pads of disc brakes, designed for operation in different friction mechanisms

Friction disc // 2082034
The invention relates to the field of engineering, namely for friction products, has a disk shape and is maintained in frictional nodes disc type

The invention relates to a friction plate for a disc brake, in particular for road and rail vehicles, which are made of one or several parts and consists of a deposited on the carrier plate or sheet block of compacted friction material and carrier plate on the side of the block of friction material is applied substrate carrying the layer of the individual firmly linked to a block of friction material shaped protrusions with the extension to the top, and the block of friction material is pressed onto the supporting layer is attached with the filling of the grooves separate shaped protrusions

The invention relates to the brake pads railway rolling stock that runs on electricity
The invention relates to the brake pads railway rolling stock that runs on electricity

The invention relates to the brake pads railway rolling stock

The invention relates to the field of rail transport and can be used as an actuator of a brake Shoe of an electromagnetic rail brake (AMRT)

Pad disc brake // 2086444
The invention relates to the brake pads of disc brakes, designed for operation in different friction mechanisms

The invention relates to the brake pads railway rolling stock

FIELD: railway transport; vehicle brakes.

SUBSTANCE: proposed brake shoe of rail vehicle has off-axial conical working surface and cylindrical rear surface. Distance between axis of rotation of rear surface of shoe and working surface is greater than distance between axis of rotation of working surface and shoe working surface.

EFFECT: improved operating characteristic of shoe owing to reduction of possibility of cracking and breaking of edge parts of shoe in operation.

2 dwg

FIELD: railway transport; vehicle brake shoes.

SUBSTANCE: proposed brake shoe contains friction member and metal skeleton, being essentially perforated metal strip and wire frame combined with strip. Ratio of mass of metal skeleton and mass of shoe is 1:15 - 1:35, and ratio of mass of metal perforated strip and mass of wire frame is 1:1 - 1:6.

EFFECT: increased strength of shoe.

1 dwg

FIELD: railway transport; vehicle brake shoes.

SUBSTANCE: proposed brake shoe contains friction member made by hot mounding method from composition containing polybutadiene rubber, curing group, powder fillers and fiber. Friction member is made with ratio of fiber and power fillers in composition being 1:1 - 1:20.

EFFECT: increased strength of shoe owing to increased strength of friction member by choosing optimum ratio of fiber and powder fillers.

1 dwg

FIELD: railway transport vehicle brake shoes.

SUBSTANCE: proposed brake shoe contains polymeric friction member secured on metal skeleton being essentially perforated metal strip provided with hole for cotter and combined with closed frame. Plane of symmetry of hole for cotter asymptotically approaches plane of symmetry of shoe. Friction member is made by hot molding method from composition in which mass of rubber is 5-30% of mass of composition.

EFFECT: improved performance characteristics of brake shoe owing to higher strength indices.

1 dwg

Up!